炉烘烤有机玻璃时,烘烤面积大,需要()才能受热均匀。
A、多放几个电炉
B、将有机玻璃压弯烘烤
C、将有机玻璃先切成小块
D、将有机玻璃竖起烘烤
参考答案:A
— There are so many books. Would you please ask some students _______ me ______ them to the classroom?
— Ok.
A.help, carry
B.to help, carry
C.helping, to carry
D.to help, carrying
分解因式:ab2-4a= .